Installation manual
Geo Direct PWM Amplifier
Connector PinOuts and Wiring 33
X4: Safety Relay
This 4-pin Phoenix Contact Terminal Block provides connectivity to a safety relay input, and
If the Safety Relay option is installed, there is a dedicated Safety Input @24VDC (user supplied). When
the Safety Input is asserted, then the hardware will cut the 20V power to the gate driver which will
prevent all output from the power stage (the Gate Enable LED will turn off).
If the user doesn’t need to use the Safety Input and the drive has it installed, the user has to bypass it by
wiring a 24VDC input to WA (pin 1) and the return (24VDC) to WB (pin 2).
X4: Phoenix Contact 4-Pin TB Female
Mating: Phoenix Contact 4-Pin TB Male
1 2 3 4
TB-4: 016-PL0F04-38P
Pin #
Symbol
Function
Description
1
RELAY WA
Input
Safety Input 24V
2
RELAY WB
Input
Safety Input Return
3
RELAY COM
Common
4
RELAY N/O
Relay
Normally Open
Note
There are no software configurable parameters to enable/disable or
otherwise manipulate the Safety Input functionality.